Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
3163 Randi (1981 QM)
Classification: Mars-crossing Asteroid          SPK-ID: 2003163
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3356531873036597 5.1283e-08  
a 2.393069163718977 8.759e-09 AU
q 1.589827871478599 1.2317e-07 AU
i 3.087507365616764 6.6375e-06 deg
node 194.0734746888014 9.3109e-05 deg
peri 121.6174099948591 9.3521e-05 deg
M 304.8601541879027 9.7158e-06 deg
tp 2457007.606795687485
(2014-Dec-16.10679569)
3.7091e-05 JED
period 1352.170020597644
3.70
7.4237e-06
2.032e-08
d
yr
n .2662387085322924 1.4617e-09 deg/d
Q 3.196310455959355 1.1699e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1010  
   data-arc span      25410 days (69.57 yr)  
   first obs. used      1944-09-13  
   last obs. used      2014-04-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52361  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:43:21  

Additional Information
 Earth MOID = .578191 AU 
 T_jup = 3.450 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8 mag n/a MPO263374  
rotation period rot_per 59.50 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Higgins, D.J. (2011) http://www.david-higgins.com/Astronomy/astero id/lightcurves.htm]

3163 Randi (1981 QM)          Discovered 1981-Aug-28 by Kowal, C. at Palomar (675)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1981 QM = 1944 RH = 1970 RK 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Apr-24 08:54 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin